Gas heater



May 15, 1928.

1,669,503 N. D. ANTRIM GAS HEATER Filed Aug. 19, 1924 l 5 Sheets-Sheet 1 www mmm mmm wwwwww mama @8@@@@ g@@@@@@ ,mwm 2@@@@@ l INVENTOR May 15, 1928. 1,669,503

J w. D. ANTRIM GAS HEATER Filed Aug. 19, 1924 5 Sheets-Sheet 5 INVVENTOR May 15, 1928.

1,669,503 W. D. ANTRIM GAS HEATER Filed Auz. 19, 1924 5 Sheets-Sheet 4 IX A l 7 INVENTOR May 15, 1928.

' W. D. ANTRIM GAS HEATER 5 Sheets-Sheet 5 Filed Aug. 19, 1924 [I J i it; i :r MW

VENTOR Patented 1.5, 19228.

UNITED STATES.

I htfias gi PAT ENT OFFICE.

WILLIAM D. ANTRIM, F GLOUCESTER CITY, NEW JERSEY, ASSIGNOR TO WELSBACH COMPANY, 013 GLQUCESTEE CITY. NEW JERSEY, A CORPORATION OF NEW JERSEY.

GAS HEATER.

Application filed August 19, 1224. Serial No' 732,918..

A preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of a. heater constructed in accordance with my invention, 2

Figure is a horizontal section, on a larger scale, on the line IIII of Figure 3, the lateral extension members and extension legs being removed,

Figure 3 is atransverse vertical section on the line lII-III, of Figure 2,

Figure l is a detail plan view of the burner,

Figure 5 is a view partly in elevatlon and partly in section, on a larger scale, of a portion of the burner manifold,

Figure 6 is a section on the line VI-VI of Figure 5,

Figure 7 is a detail plan view of an element of a burner tip,

Figures 8 and 9 are, respectively, a rear elevation and an end view of the fireclay header,

Figure 10 is an inverted plan view of the header,

Figure 11. is a section on the line XIXI of Figure 10, and

Figure 12 is a detail view of the metal cover for the upper edge of the header.

In the illustrated embodiment of the invention, the heater comprises a sheet metal back 2 having integral forwardly extending sides 3. These sides have outwardly flared front extensions 41 the front ed 'es of which l 7 o fasten to the outer rearwardly extending flanges 5 of corner uprights 6. A pair of supporting legs 7 is fastened to the back 2 and an additional pair of supporting legs 8 is secured to the lower ends of the corner uprights. A front bar 9 has its ends secured to the lower portions of the corner uprights by screws 10. This bar is bowed outwardly, as shown in Figures 1 and 2. Another bar 11 is provided at the top of the heater and is fastened. to the upper edge of the sheet metal back 2, the ends of the bar being fastened to the sides 3. The bar 11 has a member 12 detachably mounted thereon, said member ha ing a suitable configtu'ati'on to give a finished appearance to the top of the heater. Members 13 extend over'the upper edges offthe sides 3 and are fastened at one end to the ends. of the bar 11. by screws 14, and are. fastened at the other end to the upper ends of the corner uprights by knobs 15 which screw onto threaded stems (not shown) extend ing upwardly from the corner uprights and passing through openings in the members 1'3.

The corner uprights, the front bar 9, the. members 12 and 13 and the knobs 15 are formed of cast or wrought metal and are preferably provided with an ornamental design to give apleasing appearance to the heater. In order to further enhance the appearance of the heater,,ornamental extensions- 16 may be secured to the lower portions of the corner uprights. These extensions. are curved and extendlaterally and for- Wardly from the corner uprights and have ornamental legs 17 detachably secured to their outer ends Additional triangular shaped ornamental wings 18ers mounted'on the extensions 16 and aredetachably secured to the corner uprights and to the extensions.

Located between the sheet metal sides 3 and fastened at its ends thereto is a sheet metal deck 19'- having an upward extension 20 at its rear edge. This'dcck has a. longitudinal: slot 21 therein through which the burner tips project, as will be hereinafter explained. The deck also has a depressed ledge 22 at the front thereof upon which the rear edge of a sheet metal hearth 23 rests. The forward edge of the hearth is supported upon a shoulder 241- of the front bar 9. Sheet metal side pieces 25 extend upwardly from the ends of the hearth. The forward edgesof these side pieces engage between the inner rearwardly extending flanges 26 of the corner uprights and lugs 25. The rear edges thereof engage between. the sides 3 and fireclay end pieces to be described later. The hearth and the side pieces have a vitreous enamel coating provided with markings 23 giving the effect of tile, and greatly adding to the attractiveness of the heater. Thehea-rth can be easily dismounted as desired, by first removing the front bar. Fastened, by screws 27, to the portion of the deck 19 adjacent the ledge 22 is a metal finishing and clamping strip 28, preferably of brass. This strip has a 2 w I i 1,669,503

downwardly and. rearwardly curved for? ward edge portion 29 bGtWGGIl'WlllCl'l and the ledge 22 the rear edge of the hearth engages, whereby assembly anddisassembly is ditions of as on )1 and oressure ma 1 require. Seated within each bushing, upon a shoulder 34 isa distributing element 35,115

shown in detail in Figure 7, preferably formed of thesame material as the burner tip and functioning to distribute the gas "uniformly to the several openings of the tip and to prevent flash back. The tip has integral projections 36 atits lower end,

whereby, when the tip and distributing member are assemblcdwithin the bushing, the lower end of the tip will be properly spaced from the upper end ofthe distributing member. Interposed between a shoulder '34" ofeach bushingand theupper face of the manifold is a gasket 37 whereby gastight connections are provided between the bushings and the threaded openings in the upper side of the manifold. Interposed between the openings 31 are lugs 38 which areintegral with the manifold and extend upwardly slightly above the upper ends of j the burner tips, for a purpose'which will be explained later.

Connectedtothe central portion of the burner manifold isa Bunsen tube 39. This nection is provided with avalve 41, the

stem 42 of which extends throughan openmg in a guard 43 detachablysecured to the lower edge ot the front bar 9. The stem has a suitable o eratin handle 44 mounted upon its outer end. The Bunsen tube has a series. of air admission openings 45 therein adjacent its forward end adapted to be controlled by a sleeve 46 slidably mounted on the forwardend of the tube. This sleeve has a forwardly extending rod 47 fastened thereto and provided with a laterally. extending end portion 48 engaged by an eye 49 on the end of a stem 50 which projects through the guard 43. A coil spring 51 surrounds the stem between the eye 49 and the guard and the stem. has a button 52 on its forward end. It will be apparent that the spring normally maintains the sleeve in the positionshownin Figure 3, whereby the openings 45 are fully uncovered. By pulling outwardly on. the knob, 52 the openings 45 can be more or less re stricted,whereby the sleeve 46 as a choke to give a rich mixture when lighting the heater. I

Integral with an intermediate portion of the Bunsen tube is an annular flange '53 against which is seatedan annular disk 54. Another disk 55 is secured between the front end of the tube and a flange 56 onthe gas connection 40, the latter being secured to the front end of the tube-by screws 57 passing through said flange. The rod 47 extends through an opening in the disk 55 and through a notch in the flange 53. The disks 54 and 55 have flanges 58 which support a cylindrical screen 59 surrounding the forward portion of the Bunsen tube for filtering all. of the air p ssing to the Bunsen tube-thrmigh the openings 45.

Extending between the sides 3 adjacent the upper edgesthereot and fastened at its ends to said sides is a support 60. This support has a downwardly and rearwardlyinclined wallGl, the rear-edge of WlliClllGX tends througha slot 62 in the upward extension 20 of the supporting plate 19. Carried bythe support 60 is a fireclay header 63. There is a space 64 between. the bar f 11 and the upper edge of this header and stud upper edge 1s covered by a sheet metal strip 65, shown in detail 111 Figure 12.

Spaced lugs 11 extend downwardly from I the bar ll into this space and engage the strip 65. It will be noted by reference to Figures 8, 9, 10 and 11, that the header has a number of slots 66 in its upper rear edge portion intermediate lugs-67 The 1ugs67 engage the metal back 2 [and the slots (36 provide spaces through which the air flowing upwardly between the back2 and the member 20 can pass. The member 65, it will be noted, is shaped to coy er the" upper edge of the header and has flanges 68 which engage the walls 69 of the slots. A packii'lg 70 is interposed between the rear upper edge of the header and the upper en'd of the upward extension 20. This upward extension has an opemng71 therem surrounded by a suitable fitting 72 for connection to anciltake pipe. j

Extending vertically between the. sides 3 adjacent the rear edge'of the slot 21 in the deck 19 isa corrugated sheet metal reflector 73, which is preferably calorized to resist oxidation at the high temperature towhich itis subjected. The lower edge of the re flector is received in a channel member 73 secured to the upper face of the deck 19.

while its upper edge engages in a groove 74 at the forward edge ofthe inclined wall 61 of the support 60. i

The burner tips 33 and the lugs 38 project essence upwardly through the slot 21 in the deck 19. Radiants have their lower ends seated upon the lugs 3S and have their" upper ends positioned. in: an inverted trough 76 in the header. Theheader overl'ian sithe radiants and acts as a top support for them and also as a. hood to carry away the combustion products. In one end of the header there is an opening 7 7 which registers with a similaropening (not shown-)- in the adjacentsheet metal side 3. A, pyrophoric lighting device may be positioned adjacent these openings 80 which protect the metal sides and provent themv from burning out.

Having now described theinvention in;

detail I will endeavor topoint out the more important advantages thereof. The design of the burner manifold and the Bunsen tube whereby the latter runs under=- the former and then curves up into the manifold permits of 'aproperly constructed Bunsen tube without an excessive depth of hearth and brings the controls to thef'ront of the heater. The provision of the slidingsleeve 46 in connection with the primary air inlets 45 enables a rich-mixture to be obtained at the top of the radiants for, ignition. purposes. The clay header overhanging; the radiants not only acts-as a topsu-pport for; them and as a hood to carry away the combustion products, but also provides an inverted trough throughout; its length to trap some of the mixture, insuring ignition of allof the radiants at one time.

The air is permitted to flow upwardly through the space between tlhvmetalback 2 and the upward extension 20 and to pass out tlniough thespace 64 between the upper bar ll and the upper edge ofthe clay header. This circulation of the airprevents the metal walls of the heater from becoming excessively hot, and provides means for effectively circulating a heated air current throughthe space or room containing the heater, thereby increasing the effectiveness of the heater.

Moreover, an air space is provided between the corrugated metal reflector 73 and the upward extension 20 which prevents the reflector from becoming overheated;

The vitreous enamel hearth and-side pieces give the effect of'tile, and thefront bar and hearth are easily removable for access to the gas connection without disturbing the rest of the heater structure. The removable refractory end pieces between the end radiants and the metal sidewalls prevent the latter from being burned out by reason of the heat radiated from the radiants. The individual multihole burner tips are easily removable for eleaninggor changing, equipment and safe against flash back, and the airscreen over the: Bunsen air inlet filtersout any dirt from the primary air, thereby preventing any clogging of, the tips. and distributing elements. These and other features of the in.- vention result in a highly efiicient heater. Furthermore, the heater is compact, and, of pleasing appearance. a

While Ihave shown; and described a preferred embodiment of my invention, it will be understood that changes may be made in the details of construction without departing from the spirit of the invention or scopev of the appended, claims,

I claim:

1. In a gas heater, a, burner manifold ex; tending longitudinally thereof and, having space-d burner tips, a Bunsen tube extendingfrom the front portion of the heater.

transversely thereof and connected at its rear end to the manifold, said tube having inlets for gas and primary air at its forward end, and a valve operable from the front of the heater for controlling the air inlet to facilitate lighting,substantially as described...

2; In a gas heater, a burner manifold extending longitudinally thereof and having spacedburner tips, a Bunsen.tubeeXtending from the front portion of the heater transversely thereof and connected at its rear end to the manifold, said tube having inlets for gas and primary air at its forward end, and means operable from the front of the heater for controlling both the gas supply and the air inlet, I substantially as described.

In a gas heater, aburner manifold extending longitudinally thereof and having spaced burner tips, Bunsen tube extending from the front portion of the heater transversely thereof and connected at its rear end to the manifold, said tube having inlets for gas and primary air at its forward end, a valve for controlling the primary air inlet, spring means normally maintaining said valve open, and means operable from the front of the heater for closing said valve. substantially as described.

4. In a gas heater, a burner manifold extending longitudinally thereof and having spaced burner tips, a Bunsen tube extending from the; front portion of the heater transversely thereof. and connected at its rear end tothe manifold, said tube having a plurality ofperipherat air inlets in its forward end portion and havingan inletfor gas adj-acent said primary air inlets, a sleeve slidably mounted on saidforward end portion of the tube for controlling the primary air inlets, an air screen for the primary air surrounding sa-id :lorwardend portion of the tube, and means operable from the front of the heater for operating said sleeve and for controlling the gas supply, substantially as described. I

lOO

lower ends, and a header of refractory ma 5. In. a gas heater, a removable hearth, a burner manifold at the rear of Silld hearth extending longitudinally "of the heater,

burner tips projecting upwardly from sa d manifold, a Bunsen tube extending-trans versely of the heater beneath. said hearth and manifold and having its rear end portion curved upwardly and forwardly and at tached to the manifolthsaid tubethaving a gas connection and inlet for primaryair at its forward end, and means Operable from the front of said front bar for controlling the air inlet and the gas supply, substantially as'd'escribed. a

6. In a gas heater. a burner nianifoldex tendinglongitudinally thereof and having spacedburner tips,"radiants extending vertically above said tips, supporting means on said manifold engagii'lg the lower ends of said radiants and pern'iitting access of secondary air to said Iradiants through said terial extending longitudinally of the heater above said radiants, said header overhang ing theuppcr end portions of said radiants and acting as atop support and lighting means therefor, substantially as described.

7. In a gas; heater, a burner manifold extending longitudinally thereof and having spacedburner tips, radiants extending ver ticallyabove said tips, supporting means engagingthe lower ends of said radiants and permitting access of secondary air to said radiant's through said lower ends, and a" header of refractory material extending lon gitudinally of the heaterabove saidradi ants, said header having an inverted trough extending longitudinally thereof andinto which the upper end portions of said radi ants project in supporting relationship, said trough constituting a lighting means for the heater, substantially as described.

8. In 'a gas heater, a back and sides ex tending forwardly therefrom, a horizontal. deck extending between said sides and having a longitudinally extending slot therein,

a burner manifold extending longitudinally of the heater beneath said slot, burner tlps projecting upwardly from said manifold, radiants supported on said n' anifold and extending vertically above said tips, a support extending between said sides at the rear of the uppereud portions of said radiants, and

a metal reflector extending vertically between the sides at the rear of said radiant's, 1 said reflector havlngits lower edge in engagen'ient with said deck and its upper edge in engagement wlth sa dsupport, substantially as described.

9; In a gas heater, a backand sides extending forwardlytherefrom, a horizontal deck ext-ending);between said sides and havmg a longitudinally extendlng slot therein, a burner manifold extending longitudinally of theheater beneath said slot, burner tips projecting upwardly from said manifold, radiants supported on said manifold and extending vertically above said tips, a sup port extending between said sidesat the rear of the uppcrend portions of said radiants, a metal reflector extemling vertically: between the sides at the rear of said radiants, said reflector having its lower edge in engagcment with said deck audits upper edge in engagement with said support, and a headerof refractory material extending 1011- gitudinally ofthe heater above said radr ants, said header havingan invented trough extending longitudinallythereof and into which the upper end portions of said radiants project, substantially as described,

10. In a gas heater, a back and sides extending forwardly therefron1,a horizontal deck extending between said sides and ha ving a, longitiulinally extending slottherein, a burnermanifold extending longitudinally of the heater beneath said slot, burner tips projectingupwardly from saidmanifold, radiants supported on said manifold and extending vertically above said tips, a

support extending between said sides at the rearof the upper end portions of said radiants, and metal reflector extending vertically between the sides at the rear of said radiwardly from said manifold, radiants extending vertically above said tips, a metal partitionextending upwardly from the rear edgeof said deck plate above the upper ends of said radiants, and means extending through said partition and the metal back for carrying away the products of combustion, said back and partition providing a space therebetween insuring an upward flow of cooling air through said space, substantially as described. L

12. In a gas heater, a metal back and metal SldGS extending forwardly therefrom, a

horizontal metal deck plate extending be tween saidsides andhaving a longitudinally extending slot therein, a burner manifold extending longitudinally of the heater beneath said slot, burnerltips projecting upwardly from said manifold, radiants extend ing vertically above saidtips, a header of refractory material extending longitudinally of the heater above said radiants, said header overhanging the upper end portions of said radiants and acting as a top supporttherefor, a metal partition extending upwardly from the rear edge of said deck plate and having its upper edge in engagement with the rear face of said header, and means extending through said partition and the back of the heater for carrying away the products of combustion, said partition and said back providing a space therebetween for -insur ing an upward flow of cooling air through such space, substantially as described.

13. In a gas heater, a back and metal sides extending forwardly therefrom, a burner manifold extending longitudinally of the heater between said sides, spaced burner tips projecting upwardly from said manifold, radiants extending vertically above said tips, and removable end pieces of refractory material arranged between the endradiants and the metal sides, substantially as de scribed.

14. A gas heater, comprising side walls, radiants, and end pieces of refractory material between the end radiants and said side walls, said radiants and refractory end pieces being similarly removable, substantially as described.

15. In a gas heater, a burner manifold extending longitudinally thereof and having heater for controlling the primary air inlet,

substantially as described.

16. In a gas heater, a heating means, a reflector cooperating therewith, means for "supplying a combustible mixture to said heatingmeans, and walls forming a dead air space adjacent said reflector and an air circulating duct in spaced relation to said reflector, substantially as described.

17 In a heater, enclosing walls, heating means within said walls and in spaced relation thereto, a reflector adjacent said heating means, and an air circulation duct in spaced relation to said reflector and adjacent the back wall of the heater, substantially as described.

In testimony whereof I have hereunto set my hand.

WILLIAM D. ANTRIM.

CERTIFICATE OF CORRECTION.

Patent No. 1,669,503; Granted May 15, 1928, to

WILLIAM D. ANTRIM.

it is hereby certified that error appears above numbered patent requiring correction as strike out the Word "primary", and pherai" in line 120; page 4, line 93, ciaim Hi, beiore the Word "metal" insert the article "a"; and that the said Letters Patent shcuid be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of June, A. D 1928.

in the pririted specification of the foilows: Page 3, line 122, claim 4-,

M. J. Moore, (Seal) Acting Cemmissioner of Patents.

insert the same to follow after the word "peri- 

